Simplest form answer

21/42 Simplified = 1/2

The simplified form of 21/42 is 1/2. The GCF is 21, the decimal is 0.5, and the percent is 50%.

Simplified

1/2

Decimal

0.5

Percent

50%

Step-by-step GCF reduction

1. Find the greatest common factor.

The GCF of 21 and 42 is 21.

2. Divide the numerator and denominator by the GCF.

21 ÷ 21 = 1

42 ÷ 21 = 2

3. Write the result.

21/42 simplified is 1/2.

Decimal equivalent

1/2 = 0.5

Percentage equivalent

1/2 = 50%

50%

The filled part represents 1/2 of one whole.

Use the main fraction simplifier for any numerator and denominator.